PROBE::NETFILTER.I(3stap)

NAME
probe::netfilter.ip.pre_routing - Called before an IP packet is routed

SYNOPSIS

netfilter.ip.pre_routing

VALUES

urg
    TCP URG flag (if protocol is TCP; ipv4 only)

psh
    TCP PSH flag (if protocol is TCP; ipv4 only)

rst
    TCP RST flag (if protocol is TCP; ipv4 only)

nf_stolen
    Constant used to signify a 'stolen' verdict

outdev
    Address of net_device representing output device, 0 if unknown

syn
    TCP SYN flag (if protocol is TCP; ipv4 only)

data_hex
    A hexadecimal string representing the packet buffer contents

protocol
    Packet protocol from driver (ipv4 only)

nf_drop
    Constant used to signify a 'drop' verdict

dport
    TCP or UDP destination port (ipv4 only)

nf_accept
    Constant used to signify an 'accept' verdict

saddr
    A string representing the source IP address

indev
    Address of net_device representing input device, 0 if unknown

outdev_name
    Name of network device packet will be routed to (if known)

nf_repeat
    Constant used to signify a 'repeat' verdict

iphdr
    Address of IP header

nf_stop
    Constant used to signify a 'stop' verdict

indev_name
    Name of network device packet was received on (if known)

pf
    Protocol family - either 'ipv4' or 'ipv6'

ipproto_tcp
    Constant used to signify that the packet protocol is TCP

length
    The length of the packet buffer contents, in bytes

data_str
    A string representing the packet buffer contents

family
    IP address family

ipproto_udp
    Constant used to signify that the packet protocol is UDP

daddr
    A string representing the destination IP address

fin
    TCP FIN flag (if protocol is TCP; ipv4 only)

sport
    TCP or UDP source port (ipv4 only)

ack
    TCP ACK flag (if protocol is TCP; ipv4 only)

nf_queue
    Constant used to signify a 'queue' verdict

SEE ALSO
tapset::netfilter(3stap)